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| NKS Programme Area: | NKS-R | | Research Area: | Severe accidents | | Report Number: | NKS-510 | | Report Title: | NKS- Project CURES; Combustion of Cables used in Nuclear Power Plants (2024) | | Activity Acronym: | CURES | | Authors: | Fredrik Börjesson Sandén, Teemu Kärkelä, Tuula Kajolinna, Anna-Elina Pasi, Christian Ekberg, | | Abstract: | Project CURES was a project partially funded by NKS in 2024 and a collaboration between Chalmers University of Technology in Sweden and VTT Technical Research Centre of Finland. The project aim was to investigate the combustion of different cables used in nuclear power plants. To do this, the cables a fresh chlorosulfonated polyethylene cable, a chlorosulfonated polyethylene cable that had been subjected to 1 MGy of irradiation, and a Low-Smoke-Zero-Halogen cable were heated up to 200oC, 300oC and 450oC in a tubular furnace and the exhaust gases were sampled with online FTIR to determine their composition and concentration. The same experiment was also repeated with elemental iodine present, and any differences investigated. For the experiments including iodine, a liquid trap was placed at the exhaust to capture any unreacted iodine. These liquid traps were analysed with ICP-MS to determine the iodine content.
The results imply that the two chlorosulfonated polyethylene cables mainly released CS2/ SO2, HCl, and a few linear aliphatic hydrocarbons. The irradiated cable consistently gave less releases, but the species were identical. The presence of iodine did not change this behaviour.
The Low-Smoke-Zero-Halogen cable mainly released acetaldehyde. When iodine was added, it also gave ascetic acid and, in the highest temperature, methyl iodide and isopropanol. | | Keywords: | Severe Nuclear Accidents, Iodine, Cables, Combustion | | Publication date: | 05 Febr 2026 | | ISBN: | 978-87-7893-609-7 | | Number of downloads: | 9 | | Download: |  NKS-510.pdf |
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